Advertising device.



H. J. KEATIN G.

ADVERTISING DEVICE.

APPLICATION FILED JUNE 28, 1912.

1,121,561, Patented Dec.15,1914.

'rnn stares rATENT Erica.

HARRY J. KEATING, OF CHICAGO, ILLINOIS ADVERTISING DEVICE.

To all whom itmay concern:

Be it known that I, HARRY J. KEATING, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Advertising Devices, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to advertising devices and has for its object the provision of animproved device of this character adapted for alternative illuminating purposes.

My invention has in one of its forms a plurality of illuminating devices together with new and novel mechanism for operating them one after the other.

I will describe one embodiment of my invention more in detail by reference to the accompanying drawing, in which:

Figure 1 is a longitudinally vertical sectional view of my improved device; Fig. 2 is a longitudinally horizontal sectional view of the circuit controlling portion of the de vice, Fig. 3 is a diagrammatic view more clearly to illustrate the circuit arrangements involved, and Fig. 4 is a detail view of a connector.

Referring more particularly to Fig. 1, I have provided a shell 1 within which two solenoids 2 and 3 are mounted. These solenoids conjointly control a movable element 4- consisting of the cores 5, 6 and piston rod The piston rod likewise carries two pistons 8 and 9, portions 10 of each piston consisting preferably of leather so that they may engage the inner annular surface of the shell 1 snugly when moving in one direction, but permit the passage of air when moving in the opposite direction. Twocylinders 11 and 12 are formed between the solenoids 2 and 3 and a central wall 13 within which the pistons 8 and 9 are designed to operate. The piston rod 7 is adapted to engage snugly the opening provided therefor in the wall 13 so as to prevent escape of fluid from one cylinder to the other. The cores 5 and 6, however, are not adapted to snugly engage the inner walls of the sole noids 2 and 3 so that air may escape outwardly between the said cores 5 and 6 andthe inner walls of the said solenoids 2 and 3. Ports ld and 15 to permit the influx of 7 air into the cylinders 11 and 12 respectively:

are provided in the shell 1 and the degree of Specification of Letters Patent.

Patented Dec. 15, 1914-.

1912. Serial no. 706,448.

also provided for purposes an insulating base 24 so that they may each 5 serve as terminals for the electric circuit. This insulating base 24 is preferably mounted upon the shell 1. The rocking element 21 has a crank arm 25 through the agency of which it may be moved from one alternative position to the other and this is accomplished through the agency of the arm 26 having the slotted extremity 27 for engaging the pin 28. Suitable shaft studs 29 and 30 are fastened to the element 22 to secure the pivotal mounting thereof. An insulated connector 31 is likewise provided to which one terminal of the device 21 may be connected, and this connector 31 is insulated from the rest of the said device.

In Fig. 4 ll showmore in detail how the connector 31 is insulated by means of the insulation 31 from the stud 29. It will thus be seen that this connector may move with the stud 29, but being completely insulated therefrom it may serve as a conducting means to conduct the current to the terminal 351 Projecting within the device are two pairs of terminals 32 and 33, and 34 and 35.. A

quantity of mercury 36 is inclosed within the confines of the device 21 from which the air is then extracted to obtain the desired degree of vacuum and the said device 21 is then sealed. The contacts within the device are so arranged that should it occupy the position of Fig. 1, circuit is established between the contacts 32 and 33, but should the said device 21 occupy its alternative position, contact is established between the terminals 34 and 35. The position of the dc vice 21 is regulated by the position of the cores 5 and 6 and the energization of the coils 2 and 3 is dependent upon the closure f contact between the pairs of contacts of h device 21.

As will appear later from an explanation of the circuit, whenever contact is closed between the elements 32 and 33, coil 3 is energized and when contact is established between the "elements 34 and 35, circuit through the coil 2 is complete. In the operation of the device therefore, referring to- Fig. 1, circuit is closed through elements 32 and 33, thereby closing circuit through the coil 3.- The coil 3 thereupon begins to attract its core 6, but only slowly as the amount of'air permitted to enter the port the port 20. A rapid influx of air into the cylinder 12 takes place, whereby the rocking element 21 is rapidly placed in its alternative position, whereupon circuit is closed throughthe elements 34 and 35 and coil 2 energized so that the device then operates in the reverse manner.

Referring more particularly to Fig. 3 I show the device 21 diagrammatically as also the coils 2 and 3 The terminal 33 is connected to the arm 30 and then extends by means of a conductor 37 to a lamp 38 which is part of the advertising device, thence through the coil 3 to the generator 39, or other source of current supply, thence to the arm 29 to the terminal 32. Should contact be established, however, between the elements 34 and 35, then the circuit will extend from the terminal 35 through the insulated.

connecting element 31, conductor 40, lamp 41 of the advertising device,,coil 2, generator 39, arm 29 to the element 34. From this it will be seen that the lamps 38 and 41 are alternately energized so that either one or the other burns and that the device is of such a character that the burning of each lamp may extend over aconsiderable period of time, depending upon the regulation ofi'ered through the agency of the valve 17. At about the time, however, when the reversal of the element 21 takes place, the arrangement is such that a very rapid reyersal takes place so that the time during which lamps remain extinguished may be reduced to a minimum. Likewise, if desired, through the selective regulation of the valves 16 and 17, one lamp may be called upon to burn a certain length of time and the other lamp may be called upon to burn a greater or lesser length of time.

The device is simple and on account of the partial vacuum within the device 21 may continue to operate for a very long time without attention as sparking at the contacts is practically eliminated.

Having thus described one form of cerrying out my invention, what I claim as new and desire to secure by Letters Patent isz.

1. .A device of the character described comprising a tube, a pair of solenoids- 'mounted at the opposite extremities of said tube to form a blank space between the opposite faces of said solenoids, a wall to divide said space into two compartments, a core for each solenoid, a piston rod for fastening said cores together, two pistons mounted on said pistonrod, one piston for each compartment, means for regulating the rapidity of fiow' of air into said compartments, and a circuit changing device controlled by said cores.

3. A device of the character described comprising a tube, a pair of solenoids mounted at the opposite extremities of said tube to form a blank space between the opposite faces of said solenoids, a wall to divide said space into two compartments, a core for each solenoid, a piston rod for fastening said cores together, two pistons mounted on said piston rod, one piston for ments, a circuit changing device controlled by said cores, and a lost motion connection between said cores and said circuit changing device.

4. A device of the character described comprising a tube, a pair of solenoids mounted at the opposite extremities of said tube to form a blank space between the opposite faces of said solenoids, a wall to divide said space into two compartments, a core for each solenoid, a piston, rod for fastening said cores together, two pistons mounted on said piston rod, one piston for each compartmennmeans for regulating the rapidity of flow ofair into said compartments, a circuit changing device controlled ing device, said circuit changing device having means to control the circuit through said solenoids. a

In witness whereof, I hereunto subscribe my name this 7th day of June, A. D., 1912.

, HARRY J. KEATING. Witnesses:

MAX W. ZABEL,

HAZEL J ONES-J 

